Questions :
The ratio of the efficiencies of A, B and C is 7 : 5 : 8. Working together, they can complete a piece of work in 42 days. B and C worked together for 21 days and the remaining work was completed by A alone. The whole work was completed in:
Options :
- 96 days
- 99 days
- 102 days
- 93 days
correct answer : c)
